Patent EP-2220941-A1 (EP)
Inventor: REICHERT GERARD
IPC: A21C11/12
Filed: 2010-02-17
Abstract: The bread scarifying machine (1) comprises a cutting tool carried by a tool holder (3) arranged on a frame (4) over a receiving area of one dough roll to be scarified, a device or zone shifted with respect to one another to carry out the scarifying of the dough roll, a feeding rack (8) placed in front of the frame and having stacked plates, a gripping unit for shifting each tray individually from the feeding rack under the tool holder to carry out the scarification of the dough rolls, and a lift cart (7) carrying the tool holder. The bread scarifying machine (1) comprises a cutting tool carried by a tool holder (3) arranged on a frame (4) over a receiving area of one dough roll to be scarified, a device or zone shifted with respect to one another to carry out the scarifying of the dough roll, a feeding rack (8) placed in front of the frame and having stacked plates, a gripping unit for shifting each tray individually from the feeding rack under the tool holder to carry out the scarification of the dough rolls, and a lift cart (7) carrying the tool holder. The movable tool holder vertically rotates with respect to the frame and is joined to the first rotating unit arranged to shift the tool holder on height with respect to the receiving area of dough roll to be scarified. The reception area is constituted of a tray carrying the dough roll, and a conveyor belt carrying the dough rolls. The first rotating unit comprises an actuator (10) carried by the frame or the lift cart, and rotates with a worm meshing a threaded bearing fixed to the lift cart or the frame. An end of the worm is engaged with the tool holder. A transverse cart is mounted on the lift cart, and moves transversely with respect to the frame and joined to the second rotating unit for shifting the cutting tool perpendicular to the relative movement of the reception area. The second driving unit comprises a second actuator carried by the lift cart or the transverse cart and joined to the worm. Each cutting tool rotates with respect to the tool holder around a first axis of rotation perpendicular to the receiving area and joined to the third rotating unit arranged for changing the cutting angle of the cutting tool with respect to the dough roll. The tool holders are rotated around a second axis of rotation parallel to the receiving area, intersects the first rotational axis, and joined to the fourth rotating unit arranged to modify the inclination of the cutting tool with respect to the dough roll laid on the receiving area. The third rotating unit comprises a third actuator carried by the tool holder and rotating on a hanger meshing a pinion joined with each tool holder. The fourth rotating unit comprises a fourth actuator carried by the tool holders and joined to an adjuster fixed for applying a torque on each tool holder. The cutters rotate around their central axis passing by the second rotation axis. Each cutter is mounted in a free bush of a sleeve of the tool holder. The bush comprises a heel eccentrically arranged for contacting with a cam fixed to the adjuster in an extreme position of the third rotating unit. The gripper comprise a movable gripping body rotating horizontally with respect to the lift cart and is joined to a sixth rotating unit arranged to move each tray individually between a retracted position in which the tray is in the feeding rack and an exit position in which the tray is in the scarification machine. The sixth rotating unit comprise a sixth actuator carried by the lift cart, and is joined with a first pinion rotating a belt around a second pinion on which the gripper is fixed. The actuators of rotating unit are controlled by a programmable control unit.